Jared Kushner used private email for White House business

Two points of difference.

Trump didn't do this, Kushner did. It was Hillary herself using a private email server.

Second, Hillary sent thousands of clearly official communications in a clear attempt to operate off the record. With Kushner, it appears he was using this casually and it wasnt an attempt to back channel.

"There is no indication that Mr Kushner shared classified or privileged information through his private email account."

The key difference.